The most common and most likely answer to this crossword clue is the 3 letter word YAP
I've seen this crossword clue in The Times
Y
A
P
More clues leading to the result YAP
- Go on to suffer setback
- Emit shrill sound, having twisted foot?
- Jabber as wages withdrawn?
- Wages have gone up? That’s barking!
- Old man needing year to travel west in bark
- Wage rise? Just talk
- Pay back, but not in silence, apparently
- Unknown application causes chat.
- Gossip when salary goes up
- Settle back and gossip
Buddy explains!

The straight part
We know that "Jabber" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case jabber = yap.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does YAP mean?
YAP noun- The high-pitched bark of a small dog, or similar.
- Casual talk; chatter.
- The mouth, which produces speech.
- A badly behaved child; a brat.
- Of a small dog, to bark.
- To talk, especially excessively; to chatter.
- To rob or steal from (someone).